* A simple stop watch class. */
/*
- * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <sys/time.h>
+#ifdef HAVE_RUSAGE
#include <sys/resource.h>
#include <unistd.h>
+#include <sys/time.h>
+#else
+#include <ctime>
+#endif
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include "timer.h"
timer::timer() : on(false)
{
+#ifdef HAVE_RUSAGE
getrusage(RUSAGE_SELF, &used1);
- getrusage(RUSAGE_SELF, &used2);
+ used2.ru_utime = used1.ru_utime;
+ used2.ru_stime = used1.ru_stime;
+#else
+ used1 = clock();
+ used2 = used1;
+#endif
}
void timer::start()
{
on = true;
+#ifdef HAVE_RUSAGE
getrusage(RUSAGE_SELF, &used1);
- getrusage(RUSAGE_SELF, &used2);
+ used2.ru_utime = used1.ru_utime;
+ used2.ru_stime = used1.ru_stime;
+#else
+ used1 = clock();
+ used2 = used1;
+#endif
}
void timer::stop()
{
on = false;
+#ifdef HAVE_RUSAGE
getrusage(RUSAGE_SELF, &used2);
+#else
+ used2 = clock();
+#endif
}
void timer::reset()
{
+#ifdef HAVE_RUSAGE
getrusage(RUSAGE_SELF, &used1);
- getrusage(RUSAGE_SELF, &used2);
+ used2.ru_utime = used1.ru_utime;
+ used2.ru_stime = used1.ru_stime;
+#else
+ used1 = clock();
+ used2 = used1;
+#endif
}
double timer::read()
{
- double elapsed;
- if (this->running())
+#ifdef HAVE_RUSAGE
+ if (running())
getrusage(RUSAGE_SELF, &used2);
- elapsed = ((used2.ru_utime.tv_sec - used1.ru_utime.tv_sec) +
- (used2.ru_stime.tv_sec - used1.ru_stime.tv_sec) +
- (used2.ru_utime.tv_usec - used1.ru_utime.tv_usec) / 1e6 +
- (used2.ru_stime.tv_usec - used1.ru_stime.tv_usec) / 1e6);
- // round to 10ms for safety:
- return 0.01*int(elapsed*100+0.5);
+ return ((used2.ru_utime.tv_sec - used1.ru_utime.tv_sec) +
+ (used2.ru_stime.tv_sec - used1.ru_stime.tv_sec) +
+ (used2.ru_utime.tv_usec - used1.ru_utime.tv_usec) * 1e-6 +
+ (used2.ru_stime.tv_usec - used1.ru_stime.tv_usec) * 1e-6);
+#else
+ if (running())
+ used2 = clock();
+ return double(used2 - used1)/CLOCKS_PER_SEC;
+#endif
}
bool timer::running()